使用LeakCanary，它说退出使用MapBox显示地图的活动时出现内存泄漏。 堆信息和代码如下。我什么也看不见，但是，我不知道我在寻找什么。你能看出原因吗？
在com.myapp.debug中：1.0：1。 * com.myapp.DirectionsActivity泄露： * GC ROOT static android.app.ActivityManager.mContext *泄漏com.myapp.DirectionsActivity实例
- 参考密钥：b0fc445c-fe16-46e8-aff4-71acd3924d52
- 设备：samsung samsung SM-T530NU matissewifiue
- Android版本：5.0.2 API：21 LeakCanary：1.3.1
持续时间：watch = 5272ms，gc = 189ms，堆转储= 6599ms，分析= 75048ms
详细说明：
- 类android.app.ActivityManager | static $ staticOverhead = byte [] [id = 0x70bc2699; length = 504; size = 520] |静态的 AMS_POLICY_ENFORCING = java.lang.String [id = 0x701edfb0] |静态的 META_HOME_ALTERNATE = java.lang.String [id = 0x70584898] |静态标签 = java.lang.String [id = 0x704a96a0] | static mContext = com.myapp.DirectionsActivity [id = 0x13061da0] |静态的 BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1 |静态的 BROADCAST_SUCCESS = 0 | static COMPAT_MODE_ALWAYS = -1 |静态的 COMPAT_MODE_DISABLED = 0 | static COMPAT_MODE_ENABLED = 1 |静态的 COMPAT_MODE_NEVER = -2 | static COMPAT_MODE_TOGGLE = 2 |静态的 COMPAT_MODE_UNKNOWN = -3 |静态INTENT_SENDER_ACTIVITY = 2 |
static INTENT_SENDER_ACTIVITY_RESULT = 3 |静态的 INTENT_SENDER_BROADCAST = 1 |静态INTENT_SENDER_SERVICE = 4 |
静态MOVE_TASK_NO_USER_ACTION = 2 | static MOVE_TASK_WITH_HOME = 1 | static PROCESS_STATE_BACKUP = 5 |静态的 PROCESS_STATE_CACHED_ACTIVITY = 11 |静态的 PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12 |静态的 PROCESS_STATE_CACHED_EMPTY = 13 |静态PROCESS_STATE_HEAVY_WEIGHT = 6 | static PROCESS_STATE_HOME = 9 | static PROCESS_STATE_IMPORTANT_BACKGROUND = 4 |静态的 PROCESS_STATE_IMPORTANT_FOREGROUND = 3 |静态的 PROCESS_STATE_LAST_ACTIVITY = 10 | static PROCESS_STATE_PERSISTENT = 0 | static PROCESS_STATE_PERSISTENT_UI = 1 |静态的 PROCESS_STATE_RECEIVER = 8 | static PROCESS_STATE_SERVICE = 7 |
static PROCESS_STATE_TOP = 2 |静态RECENT_IGNORE_HOME_STACK_TASKS = 8 |静态RECENT_IGNORE_UNAVAILABLE = 2 |静态RECENT_INCLUDE_PROFILES = 4 |静态RECENT_WITH_EXCLUDED = 1 |
static REMOVE_ALL_RECENT_TASKS = 8 |静态REMOVE_ALL_TASKS = 2 |
static REMOVE_TASK_EXCEPT_RECENTS = 16 |静态的 REMOVE_TASK_IMMEDIATELY = 4 | static REMOVE_TASK_KILL_PROCESS = 1 | 静态START_CANCELED = -6 |静态START_CANCELED_BY_TEMPERATURE = -8 | static START_CLASS_NOT_FOUND = -2 |静态START_DELIVERED_TO_TOP = 3 |静态START_FLAG_DEBUG = 2 |静态的 START_FLAG_ONLY_IF_NEEDED = 1 |静态START_FLAG_OPENGL_TRACES = 4 |静态START_FORWARD_AND_REQUEST_CONFLICT = -3 |静态的 START_INTENT_NOT_RESOLVED = -1 |静态START_NOT_ACTIVITY = -5 |
静态START_NOT_VOICE_COMPATIBLE = -7 |静态的 START_PERMISSION_DENIED = -4 |静态START_RETURN_INTENT_TO_CALLER = 1 |静态START_RETURN_LOCK_TASK_MODE_VIOLATION = 5 | static START_SUCCESS = 0 |静态START_SWITCHES_CANCELED = 4 |静态的 START_TASK_TO_FRONT = 2 | static USER_OP_IS_CURRENT = -2 |静态的 USER_OP_SUCCESS = 0 | static USER_OP_UNKNOWN_USER = -1 |静态的 gMaxRecentTasks = -1 | static localLOGV = false- com.myapp.DirectionsActivity |的实例TAG = java.lang.String [id = 0x1347b5c0] |客户= com.mapbox.services.directions.v5.MapboxDirections [id = 0x1351f4c0] |
currentRoute = com.mapbox.services.directions.v5.models.DirectionsRoute [id = 0x136c94e0] | map = com.mapbox.mapboxsdk.maps.MapboxMap [id = 0x12c94600] | mapView = com.mapbox.mapboxsdk.maps.MapView [id = 0x13422400] | mDelegate = android.support.v7.app.AppCompatDelegateImplV14 [id = 0x12c30fc0] |
mResources = null | mEatKeyUpEvent = false | mThemeId = 2131361951 | mFragments = android.support.v4.app.FragmentController [id = 0x13473ac0] | mHandler = android.support.v4.app.FragmentActivity $ 1 [id = 0x1347b5a0] |
mMediaController = null | mPendingFragmentActivityResults = android.support.v4.util.SparseArrayCompat [id = 0x13482080] | mCreated = true | mNextCandidateRequestIndex = 0 | mOptionsMenuInvalidated = false | mReallyStopped = true | mRequestedPermissionsFromFragment = false | mResumed = false |
mRetaining = false | mStopped = true |
mStartedActivityFromFragment = false |
mStartedIntentSenderFromFragment = false | mActionBar = null |
mActivityInfo = android.content.pm.ActivityInfo [id = 0x12f34340] |
mActivityTransitionState = android.app.ActivityTransitionState [id = 0x1347a280] | mAllLoaderManagers = android.util.ArrayMap [id = 0x134b4d80] | mApplication = android.app.Application [id = 0x12c95a80] | mComponent = android.content.ComponentName [id = 0x12c920b0] | mContainer = android.app.Activity $ 1 [id = 0x13473a90] | mCurrentConfig = android.content.res.Configuration [id = 0x13475a20] | mDecor = null | mDefaultKeySsb = null |
mEmbeddedID = null | mEnterTransitionListener = android.app.SharedElementCallback $ 1 [id = 0x724871f0] |
mExitTransitionListener = android.app.SharedElementCallback $ 1 [id = 0x724871f0] | mFeatureContextMenuListener = android.app.Activity $ FeatureContextMenuListener [id = 0x13473a60] |
mFragments = android.app.FragmentManagerImpl [id = 0x134757f0] |
mHandler = android.os.Handler [id = 0x1347b580] | mInjectionManager = null | mInstanceTracker = android.os.StrictMode $ InstanceTracker [id = 0x13473aa0] | mInstrumentation = android.app.Instrumentation [id = 0x12c2cd90] | mIntent = android.content.Intent [id = 0x133fb390] | mLastNonConfigurationInstances = null | mLauncherBooster = null |
mLoaderManager = null | mMainThread = android.app.ActivityThread [id = 0x12c42100] | mManagedCursors = java.util.ArrayList [id = 0x1347b540] | mManagedDialogs = null | mMenuInflater = null | mMultiWindowStyle = com.samsung.android.multiwindow.MultiWindowStyle [id = 0x13478790] | mParent = null | mResultData = null |
mSearchManager = null | mSubDecor = null | mSubWindow = null |
mSubWindowDummpy = null | mTitle = java.lang.String [id = 0x134a3dc0] | mToken = android.os.BinderProxy [id = 0x12c82fa0] |
mTranslucentCallback = null | mUiThread = java.lang.Thread [id = 0x8736cfb0] | mVoiceInteractor = null | mWindow = com.android.internal.policy.impl.PhoneWindow [id = 0x12db0110] |
mWindowManager = android.view.WindowManagerImpl [id = 0x1347ba00] |
myName = java.lang.String [id = 0x1347b260] | DEBUG_ELASTIC = false | isElasticEnabled = false | mCalled = true |
mChangeCanvasToTranslucent = false | mChangingConfigurations = false | mCheckedForLoaderManager = true | mConfigChangeFlags = 0 |
mDefaultKeyMode = 0 | mDestroyed = true | mDoReportFullyDrawn = 假| mEnableDefaultActionBarUp = false | mFinished = true |
mFlipfont = 0 | mIdent = 254734993 | mLoadersStarted = false |
mPreventEmbeddedTabs = false | mResultCode = 0 | mResumed = false | mStackedHeight = -1 | mStartedActivity = false | mStopped = 是的| mSubWindowAdded = false | mTemporaryPause = false |
mTitleColor = 0 | mTitleReady = true | mVisibleBehind = false |
mVisibleFromClient = true | mVisibleFromServer = true |
mWindowAdded = true | mInflater = com.android.internal.policy.impl.PhoneLayoutInflater [id = 0x134789a0] | mOverrideConfiguration = null | mResources = android.content.res.Resources [id = 0x12c24700] | mTheme = android.content.res.Resources $ Theme [id = 0x1347ba20] | mThemeResource = 2131361951 | mBase = android.app.ContextImpl [id = 0x12e06b20]
public class DirectionsActivity extends AppCompatActivity {
private final String TAG = "DirectionsActivity";
private MapView mapView;
private MapboxMap map;
private DirectionsRoute currentRoute;
private MapboxDirections client;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// employee location is destination
Intent intent = getIntent();
double employeeLatitude = intent.getDoubleExtra("latitude", new Double(getString(R.string.state_capital_latitude)));
double employeeLongitude = intent.getDoubleExtra("longitude", new Double(getString(R.string.state_capital_longitude)));
// Mapbox access token is configured here. This needs to be called either in your application
// object or in the same activity which contains the mapview.
MapboxAccountManager.start(this, getString(R.string.access_token));
// This contains the MapView in XML and needs to be called after the account manager
setContentView(R.layout.activity_mas_directions);
// get current location from preferences for use as origin
Location currentLocation = PreferencesUtilities.getCurrentLocation(this.getApplicationContext());
final Position origin = Position.fromCoordinates(currentLocation.getLongitude(), currentLocation.getLatitude());
final Position destination = Position.fromCoordinates(employeeLongitude, employeeLatitude); // yes, long,lat - strange
this.setTitle("Origin: (" + origin.getLatitude() + ", " + origin.getLongitude() + ") >> Destination: (" + destination.getLatitude() + ", " + destination.getLongitude() + ")" );
// Create Icon objects for the marker to use
IconFactory iconFactory = IconFactory.getInstance(this);
Drawable iconDrawable = ContextCompat.getDrawable(this, R.drawable.green_pin); // pin png is 125x125
final Icon greenPinIcon = iconFactory.fromDrawable(iconDrawable);
iconDrawable = ContextCompat.getDrawable(this, R.drawable.red_pin); // pin png is 125x125
final Icon redPinIcon = iconFactory.fromDrawable(iconDrawable);
// Setup the MapView
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(MapboxMap mapboxMap) {
map = mapboxMap;
// Add origin and destination to the map
LatLng originLatLng = (new LatLng(origin.getLatitude(), origin.getLongitude()));
mapboxMap.addMarker(new MarkerViewOptions()
.position(originLatLng)
.anchor((float)0.5, (float)1.0) // bottom, middle I think
//.anchor(1, (float)0.5) // (0,0) is top left
.title("Origin")
.snippet("current location: (" + origin.getLatitude() + ", " + origin.getLongitude() + ")")
.icon(greenPinIcon));
LatLng destinationLatLng = (new LatLng(destination.getLatitude(), destination.getLongitude()));
mapboxMap.addMarker(new MarkerViewOptions()
.position(destinationLatLng)
.anchor((float)0.5, (float)1.0) // bottom, middle I think
//.anchor(1, (float)0.5) // (0,0) is top left
.title("Destination")
.snippet("destination: (" + destination.getLatitude() + ", " + destination.getLongitude() + ")")
.icon(redPinIcon));
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(originLatLng) // Northeast
.include(destinationLatLng) // Southwest
.build();
mapboxMap.easeCamera(CameraUpdateFactory.newLatLngBounds(latLngBounds, 50), 5000);
// Get route from API
try {
getRoute(origin, destination);
}
catch (ServicesException servicesException) {
Log.e(TAG, servicesException.toString());
servicesException.printStackTrace();
}
}
});
}
private void getRoute(Position origin, Position destination) throws ServicesException {
client = new MapboxDirections.Builder()
.setOrigin(origin)
.setDestination(destination)
.setProfile(DirectionsCriteria.PROFILE_CYCLING)
.setAccessToken(MapboxAccountManager.getInstance().getAccessToken())
.build();
client.enqueueCall(new Callback<DirectionsResponse>() {
@Override
public void onResponse(Call<DirectionsResponse> call, Response<DirectionsResponse> response) {
// You can get the generic HTTP info about the response
//Log.d(TAG, "Response code: " + response.code());
if (response.body() == null) {
Log.e(TAG, "No routes found, make sure you set the right user and access token.");
return;
} else if (response.body().getRoutes().size() < 1) {
Log.e(TAG, "No routes found");
return;
}
// Print some info about the route
currentRoute = response.body().getRoutes().get(0);
//Log.d(TAG, "Distance: " + currentRoute.getDistance());
Double km = currentRoute.getDistance() / 1000;
// there are 4 digits to the right of the decimal, make it 2
String kilometers = km.toString();
int index = kilometers.lastIndexOf(".");
kilometers = kilometers.substring(0, index + 3);
Toast.makeText(
DirectionsActivity.this,
"Route is " + kilometers + " kilometers",
Toast.LENGTH_SHORT).show();
// Draw the route on the map
drawRoute(currentRoute);
}
@Override
public void onFailure(Call<DirectionsResponse> call, Throwable throwable) {
Log.e(TAG, "Error: " + throwable.getMessage());
Toast.makeText(DirectionsActivity.this, "Error: " + throwable.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
private void drawRoute(DirectionsRoute route) {
// Convert LineString coordinates into LatLng[]
LineString lineString = LineString.fromPolyline(route.getGeometry(), Constants.OSRM_PRECISION_V5);
List<Position> coordinates = lineString.getCoordinates();
LatLng[] points = new LatLng[coordinates.size()];
for (int i = 0; i < coordinates.size(); i++) {
points[i] = new LatLng(
coordinates.get(i).getLatitude(),
coordinates.get(i).getLongitude());
}
// Draw Points on MapView
map.addPolyline(new PolylineOptions()
.add(points)
.color(Color.parseColor("#009688"))
.width(5));
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
protected void onDestroy() {
super.onDestroy();
// Cancel the directions API request
if (client != null) {
client.cancelCall();
}
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
编辑：
添加信息以响应@cammace。这就是我获取用户位置的方式。应用程序位于前台时（而且从未出现在后台）发生泄漏。
MainActivity
private Observable<Location> locationUpdateObservable;
private Subscription locationUpdateSubscription;
@Override
protected void onCreate(Bundle savedInstanceState) {
...
// Location Observable
final LocationRequest locationRequest = LocationRequest.create()
//.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(30000); // milliseconds
// net.kjulio.rxlocation
locationUpdateObservable = RxLocation.locationUpdates(mActivity, locationRequest);
locationUpdateSubscription = locationUpdateObservable.subscribe(new Action1<Location>() {
@Override
public void call(Location location) {
// save current location to preferences
PreferencesUtilities.setCurrentLocation(mActivity.getApplicationContext(), location);
}
}, new Action1<Throwable>() {
@Override
public void call(Throwable throwable) {
Toast.makeText(mActivity, "Can't get location Throwable: " + throwable.toString(), Toast.LENGTH_SHORT).show();
}
});
答案 0 :(得分：0)
您如何获得用户位置？如果您的应用程序不在前台时没有删除位置请求，这可能会导致内存泄漏。此外，对于路线API，您应该在极少数情况下取消您的请求，但是在API响应发生之前，用户会退出应用。